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A man can row 15 km per hour downstream and 9 km per hour upstream. The speed (in km/hour) of the boat in still water is:
  • a)
    8
  • b)
    10
  • c)
    12
  • d)
    15
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A man can row 15 km per hour downstream and 9 km per hour upstream. T...
The speed of the boat in still water =1/2 (Rate downstream + Rate upstream)
The speed of boat in still water = ½ (15 + 9) = 24/2 = 12 km/hr
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A man can row 15 km per hour downstream and 9 km per hour upstream. The speed (in km/hour) of the boat in still water is:a)8b)10c)12d)15Correct answer is option 'C'. Can you explain this answer?
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